ScalePhysicsObject

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)

This article has no  links to other VDC articles. Please help improve this article by adding links  that are relevant to the context within the existing text.
January 2024

This article is an orphan, meaning that few or no articles link to it.
You can help by  adding links to this article from other relevant articles.
January 2024

Warning:This function has not been tested.

Note:This function should only be called for physics objects/scaled objects initially extracted from a model.

Note:This function does not scale entities visually.

void ScalePhysicsObject(CBaseEntity *pEnt, float scale)
{
	Assert(pEnt);
	IPhysicsObject *pList[32];
	IPhysicsObject *pNew = NULL;
	pEnt->VPhysicsGetObjectList( pList, ARRAYSIZE(pList) )
	if(pList[1]!=NULL)
	{
		Assert(pList[1]==NULL); // Don't know what to do for ragdolls
		return;
	}
	IPhysicsObject pObj = pList[0];
	Assert(pObj);
	Assert( scale > 0.0f );
	CPhysCollide *pColl = pObj->GetCollide();
	ICollisionQuery *pQuery = physcollision->CreateQueryModel( pColl );

	int convexCount = pQuery->ConvexCount();
	CPhysConvex *pConvex[convexCount];
	for( int x=0; x < convexCount; x++ )
	{
		int tris = pQuery->TriangleCount( x )
		Vector pVerts[tris][3];
		for( int y=0; y < tris; y++ )
		{
			pQuery->GetTriangleVerts( x, y, pVerts[y] );
			pVerts[y][0] *= scale;
			pVerts[y][1] *= scale;
			pVerts[y][2] *= scale;
		}

		pConvex[x] = physcollision->ConvexFromVerts( pVerts, tris );
	}

	physcollision->DestroyQueryModel( pQuery );
	pColl = physcollision->ConvertConvexToCollide( pConvex, convexCount ); // Don't need to free convex objects, this call does

	solid_t solid;
	Vector worldPosition;
	QAngle angles;
	pObj->GetPosition( &worldPosition, &angles );
	PhysModelParseSolid( solid, pEnt, pEnt->GetModelIndex() );

	solid.param.mass *= scale;
	solid.param.volume *= scale;
	solid.param.inertia *= scale;

	pNew = physenv->CreatePolyObject( pColl, pObj->GetMaterialIndex(), worldPosition, angles, &solid.param );

	Assert(pNew);

	pEnt->VPhysicsDestroyObject();
	pEnt->VPhysicsSetObject( pNew );
}